Instructional Material: The Most Insane Lego Ball Machine

Its creator calls this machine the Lego Great Ball Contraption. Built in his house by Lego genius Akiyuki over the course of two years, for a total of 600 hours of construction time, the machine has staggering dimensions: 17 modules that process 500 balls for a length of 101.7 feet (31 meters) at a rate of one ball per second. The total size is 5 by 21 feet (1.5 meters by 6.5 meters).